// *************************************************************************************************
//
// MK3D Engine
// --------------------------------------
// Copyright (C) 2007-2011 Zeb (mailto: zebbey@gmail.com)
//
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// *************************************************************************************************

#include "mk_header.h"
#include "mk_mp_depth_state.h"
#include "mk_engine.h"
#include "mk_render_device.h"

namespace MK3DE
{
	BOOL CMPDepthState::_s_DefaultEnable = TRUE;
	BOOL CMPDepthState::_s_DefaultWriteEnable = TRUE;

	CMPDepthState::CMPDepthState()
	{
		_bEnable = CMPDepthState::_s_DefaultEnable;
		_bWriteEnable = CMPDepthState::_s_DefaultWriteEnable;
	}

	void CMPDepthState::SetDepthState(BOOL bEnable, BOOL bWriteEnable)
	{
		_bEnable = bEnable;
		_bWriteEnable = bWriteEnable;

		if (bEnable != _s_DefaultEnable ||
			bWriteEnable != _s_DefaultWriteEnable)
			_bNeedToSet = TRUE;
		else
			_bNeedToSet = FALSE;
	}

	void CMPDepthState::GetDepthState(BOOL& bEnable, BOOL& bWriteEnable)
	{
		bEnable = _bEnable;
		bWriteEnable = _bWriteEnable;
	}

	void CMPDepthState::OnSetRenderState()
	{
		if (_bNeedToSet)
		{
			CRenderDevice* renderDevice = GetEngine()->GetRenderDevice();
			renderDevice->SetRenderState(RS_DEPTH_ENABLE, _bEnable);
			renderDevice->SetRenderState(RS_DEPTH_WRITE_ENABLE, _bWriteEnable);
		}
	}

	void CMPDepthState::OnResetRenderState()
	{
		if (_bNeedToSet)
		{
			CRenderDevice* renderDevice = GetEngine()->GetRenderDevice();
			renderDevice->SetRenderState(RS_DEPTH_ENABLE, _s_DefaultEnable);
			renderDevice->SetRenderState(RS_DEPTH_WRITE_ENABLE, _s_DefaultWriteEnable);
		}
	}
}